• Proposed
  • 2Under Assessment
  • 3Preliminary Assessed
  • 4Assessed
  • 5Published

Sphenospora smilacina Syd. & P. Syd.

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Scientific name
Sphenospora smilacina
Syd. & P. Syd.
Common names
IUCN Specialist Group
Rust and Smut
Assessment status
Proposed by
Alexandre Reis Machado
Comments etc.
Alexandre Reis Machado

Assessment Notes

Taxonomic notes

Telia and teliospores similar to those of the genus Sphenorchidium. Differs from Sphenorchidium by details of teliospores, as lack of apical wall thickenings around germ-pores and presence of oily gelatinous matrix in the telia. They can be often found in uredinial phase. In this case, the use of DNA sequences can be necessary for the identification.

Why suggested for a Global Red List Assessment?

This species was proposed in 1925 associated with leaves of Smilax in Guatemala. Until now, this species was reported only in species of Smilax in some countries in America. In Brazil this fungus occurs mainly in Atlantic forest and Amazon Biomes that are very threatened by deforestation. Therefore, due to the narrow host range and geographic distribution I suggest inclusion of it in the near threatened category.

Geographic range

The species is known in 9 countries based in Fungal database of USDA (Farr and Rossman, 2020) .

Population and Trends

There are few reports of this fungus associated only with the plant genus Smilax, in nine countries in America. There are few studies about this fungus.

Population Trend: Uncertain

Habitat and Ecology

Sphenospora smilacina is a biotrophic plant pathogen and causes rust in species of Smilax. It was reported only in America countries.

Subtropical/Tropical Moist Lowland ForestSubtropical/Tropical Moist Montane Forest


In Brazil this fungus occurs mainly in Atlantic forest and Amazon Biomes that are very threatened by deforestation.  In addition presents a narrow host range and geographic distribution.

Commercial & industrial areasAgro-industry farming

Conservation Actions

Protect and expand reserves of natural areas for the conservation of native plant species.

Site/area protectionFormal education

Research needed

Broader studies on the occurrence of this fungus in biomes and population studies.

TaxonomyPopulation size, distribution & trends

Use and Trade



Country occurrence

Regional Population and Trends

Country Trend Redlisted